它有时候会很快奏效，但是这个方法的设计理念的着眼点是效果而非速度。所以它可能会在当晚奏效，或者需要几周甚或几个月的时间。

Sometimes it does work quickly, but it's a method designed for effectiveness over speed, so it may work the same night, or it might take weeks if not a couple of months.

youdao

这一方法尚未在中国得到广泛尝试，部分原因是它可能不会奏效。

This is not an approach that has been widely tried in China, partly because it tends not to work.

youdao

如果这项法律不能奏效，它可能在下届选举中败北。

If the law does not work, it may lose the next election.

youdao